Answer:
The correct answer is option A) "0.0 mM sucrose".
Explanation:
Since single-celled Paramecium use their contractile vacuole to osmoregulate upon hypotonic environments, it is expected that a condition where no sucrose or salt is added is the condition where the contractile vacuole would be most active. In this extremely hypotonic condition cells tend to absorb high quantities of water, the contractile vacuole pumps water out of the cell to regulate its osmotic pressure.
The menstrual cycle is complex and controlled by many different glands and the hormones that these glands produce.
The four(4) phases of the menstrual cycle are:
(1) menstruation.
(2) the follicular phase.
(3) ovulation .
(4)the luteal phase.
Common menstrual problems include heavy or painful periods and premenstrual syndrome (PMS).
The answer is 'c<span>hemical energy to mechanical energy'. Within a car engine, a fuel and air mixture is ignited, thereby releasing chemical energy. The fuel air mixture is ignited in a cylinder, and the expanding gasses resulting from the combustion push a moving piston within the cylinder, thereby producing mechanical energy. The piston rotates a crankshaft which ultimately turns the cars wheels through a system of gears.
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The answer is A: yes
Hope this helps
